diff options
Diffstat (limited to 'gdb/i386m3-nat.c')
| -rw-r--r-- | gdb/i386m3-nat.c | 852 |
1 files changed, 426 insertions, 426 deletions
diff --git a/gdb/i386m3-nat.c b/gdb/i386m3-nat.c index 8fbd1e8..8cb51d5 100644 --- a/gdb/i386m3-nat.c +++ b/gdb/i386m3-nat.c @@ -1,426 +1,426 @@ -/* Low level interface to I386 running mach 3.0. - Copyright 1992, 1993, 1994, 1996, 2000, 2001 - Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "inferior.h" -#include "floatformat.h" -#include "regcache.h" - -#include <stdio.h> - -#include <mach.h> -#include <mach/message.h> -#include <mach/exception.h> -#include <mach_error.h> - -/* Hmmm... Should this not be here? - * Now for i386_float_info() target_has_execution - */ -#include <target.h> - -/* This mess is duplicated in bfd/i386mach3.h - - * This is an ugly way to hack around the incorrect - * definition of UPAGES in i386/machparam.h. - * - * The definition should specify the size reserved - * for "struct user" in core files in PAGES, - * but instead it gives it in 512-byte core-clicks - * for i386 and i860. - */ -#include <sys/param.h> -#if UPAGES == 16 -#define UAREA_SIZE ctob(UPAGES) -#elif UPAGES == 2 -#define UAREA_SIZE (NBPG*UPAGES) -#else -FIXME ! !UPAGES is neither 2 nor 16 -#endif - -/* @@@ Should move print_387_status() to i387-tdep.c */ -extern void print_387_control_word (); /* i387-tdep.h */ -extern void print_387_status_word (); - -#define private static - - -/* Find offsets to thread states at compile time. - * If your compiler does not grok this, calculate offsets - * offsets yourself and use them (or get a compatible compiler :-) - */ - -#define REG_OFFSET(reg) (int)(&((struct i386_thread_state *)0)->reg) - -/* at reg_offset[i] is the offset to the i386_thread_state - * location where the gdb registers[i] is stored. - */ - -static int reg_offset[] = -{ - REG_OFFSET (eax), REG_OFFSET (ecx), REG_OFFSET (edx), REG_OFFSET (ebx), - REG_OFFSET (uesp), REG_OFFSET (ebp), REG_OFFSET (esi), REG_OFFSET (edi), - REG_OFFSET (eip), REG_OFFSET (efl), REG_OFFSET (cs), REG_OFFSET (ss), - REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs) -}; - -#define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum]) - -/* Fetch COUNT contiguous registers from thread STATE starting from REGNUM - * Caller knows that the regs handled in one transaction are of same size. - */ -#define FETCH_REGS(state, regnum, count) \ - memcpy (®isters[REGISTER_BYTE (regnum)], \ - REG_ADDRESS (state, regnum), \ - count*REGISTER_SIZE) - -/* Store COUNT contiguous registers to thread STATE starting from REGNUM */ -#define STORE_REGS(state, regnum, count) \ - memcpy (REG_ADDRESS (state, regnum), \ - ®isters[REGISTER_BYTE (regnum)], \ - count*REGISTER_SIZE) - -/* - * Fetch inferiors registers for gdb. - * REGNO specifies which (as gdb views it) register, -1 for all. - */ - -void -fetch_inferior_registers (int regno) -{ - kern_return_t ret; - thread_state_data_t state; - unsigned int stateCnt = i386_THREAD_STATE_COUNT; - int index; - - if (!MACH_PORT_VALID (current_thread)) - error ("fetch inferior registers: Invalid thread"); - - if (must_suspend_thread) - setup_thread (current_thread, 1); - - ret = thread_get_state (current_thread, - i386_THREAD_STATE, - state, - &stateCnt); - - if (ret != KERN_SUCCESS) - warning ("fetch_inferior_registers: %s ", - mach_error_string (ret)); -#if 0 - /* It may be more effective to store validate all of them, - * since we fetched them all anyway - */ - else if (regno != -1) - supply_register (regno, (char *) state + reg_offset[regno]); -#endif - else - { - for (index = 0; index < NUM_REGS; index++) - supply_register (index, (char *) state + reg_offset[index]); - } - - if (must_suspend_thread) - setup_thread (current_thread, 0); -} - -/* Store our register values back into the inferior. - * If REGNO is -1, do this for all registers. - * Otherwise, REGNO specifies which register - * - * On mach3 all registers are always saved in one call. - */ -void -store_inferior_registers (int regno) -{ - kern_return_t ret; - thread_state_data_t state; - unsigned int stateCnt = i386_THREAD_STATE_COUNT; - register int index; - - if (!MACH_PORT_VALID (current_thread)) - error ("store inferior registers: Invalid thread"); - - if (must_suspend_thread) - setup_thread (current_thread, 1); - - /* Fetch the state of the current thread */ - ret = thread_get_state (current_thread, - i386_THREAD_STATE, - state, - &stateCnt); - - if (ret != KERN_SUCCESS) - { - warning ("store_inferior_registers (get): %s", - mach_error_string (ret)); - if (must_suspend_thread) - setup_thread (current_thread, 0); - return; - } - - /* move gdb's registers to thread's state - - * Since we save all registers anyway, save the ones - * that gdb thinks are valid (e.g. ignore the regno - * parameter) - */ -#if 0 - if (regno != -1) - STORE_REGS (state, regno, 1); - else -#endif - { - for (index = 0; index < NUM_REGS; index++) - STORE_REGS (state, index, 1); - } - - /* Write gdb's current view of register to the thread - */ - ret = thread_set_state (current_thread, - i386_THREAD_STATE, - state, - i386_THREAD_STATE_COUNT); - - if (ret != KERN_SUCCESS) - warning ("store_inferior_registers (set): %s", - mach_error_string (ret)); - - if (must_suspend_thread) - setup_thread (current_thread, 0); -} - - - -/* Return the address in the core dump or inferior of register REGNO. - * BLOCKEND should be the address of the end of the UPAGES area read - * in memory, but it's not? - * - * Currently our UX server dumps the whole thread state to the - * core file. If your UX does something else, adapt the routine - * below to return the offset to the given register. - * - * Called by core-aout.c(fetch_core_registers) - */ - -CORE_ADDR -register_addr (int regno, CORE_ADDR blockend) -{ - CORE_ADDR addr; - - if (regno < 0 || regno >= NUM_REGS) - error ("Invalid register number %d.", regno); - - /* UAREA_SIZE == 8 kB in i386 */ - addr = (unsigned int) REG_ADDRESS (UAREA_SIZE - sizeof (struct i386_thread_state), regno); - - return addr; -} - -/* jtv@hut.fi: I copied and modified this 387 code from - * gdb/i386-xdep.c. Modifications for Mach 3.0. - * - * i387 status dumper. See also i387-tdep.c - */ -struct env387 -{ - unsigned short control; - unsigned short r0; - unsigned short status; - unsigned short r1; - unsigned short tag; - unsigned short r2; - unsigned long eip; - unsigned short code_seg; - unsigned short opcode; - unsigned long operand; - unsigned short operand_seg; - unsigned short r3; - unsigned char regs[8][10]; -}; -/* This routine is machine independent? - * Should move it to i387-tdep.c but you need to export struct env387 - */ -private -print_387_status (unsigned short status, struct env387 *ep) -{ - int i; - int bothstatus; - int top; - int fpreg; - unsigned char *p; - - bothstatus = ((status != 0) && (ep->status != 0)); - if (status != 0) - { - if (bothstatus) - printf_unfiltered ("u: "); - print_387_status_word (status); - } - - if (ep->status != 0) - { - if (bothstatus) - printf_unfiltered ("e: "); - print_387_status_word (ep->status); - } - - print_387_control_word (ep->control); - printf_unfiltered ("last exception: "); - printf_unfiltered ("opcode %s; ", local_hex_string (ep->opcode)); - printf_unfiltered ("pc %s:", local_hex_string (ep->code_seg)); - printf_unfiltered ("%s; ", local_hex_string (ep->eip)); - printf_unfiltered ("operand %s", local_hex_string (ep->operand_seg)); - printf_unfiltered (":%s\n", local_hex_string (ep->operand)); - - top = (ep->status >> 11) & 7; - - printf_unfiltered ("regno tag msb lsb value\n"); - for (fpreg = 7; fpreg >= 0; fpreg--) - { - double val; - - printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); - - switch ((ep->tag >> (fpreg * 2)) & 3) - { - case 0: - printf_unfiltered ("valid "); - break; - case 1: - printf_unfiltered ("zero "); - break; - case 2: - printf_unfiltered ("trap "); - break; - case 3: - printf_unfiltered ("empty "); - break; - } - for (i = 9; i >= 0; i--) - printf_unfiltered ("%02x", ep->regs[fpreg][i]); - - floatformat_to_double (&floatformat_i387_ext, (char *) ep->regs[fpreg], - &val); - printf_unfiltered (" %g\n", val); - } - if (ep->r0) - printf_unfiltered ("warning: reserved0 is %s\n", local_hex_string (ep->r0)); - if (ep->r1) - printf_unfiltered ("warning: reserved1 is %s\n", local_hex_string (ep->r1)); - if (ep->r2) - printf_unfiltered ("warning: reserved2 is %s\n", local_hex_string (ep->r2)); - if (ep->r3) - printf_unfiltered ("warning: reserved3 is %s\n", local_hex_string (ep->r3)); -} - -/* - * values that go into fp_kind (from <i386/fpreg.h>) - */ -#define FP_NO 0 /* no fp chip, no emulator (no fp support) */ -#define FP_SW 1 /* no fp chip, using software emulator */ -#define FP_HW 2 /* chip present bit */ -#define FP_287 2 /* 80287 chip present */ -#define FP_387 3 /* 80387 chip present */ - -typedef struct fpstate -{ -#if 1 - unsigned char state[FP_STATE_BYTES]; /* "hardware" state */ -#else - struct env387 state; /* Actually this */ -#endif - int status; /* Duplicate status */ -} - *fpstate_t; - -/* Mach 3 specific routines. - */ -private boolean_t -get_i387_state (struct fpstate *fstate) -{ - kern_return_t ret; - thread_state_data_t state; - unsigned int fsCnt = i386_FLOAT_STATE_COUNT; - struct i386_float_state *fsp; - - ret = thread_get_state (current_thread, - i386_FLOAT_STATE, - state, - &fsCnt); - - if (ret != KERN_SUCCESS) - { - warning ("Can not get live floating point state: %s", - mach_error_string (ret)); - return FALSE; - } - - fsp = (struct i386_float_state *) state; - /* The 387 chip (also 486 counts) or a software emulator? */ - if (!fsp->initialized || (fsp->fpkind != FP_387 && fsp->fpkind != FP_SW)) - return FALSE; - - /* Clear the target then copy thread's float state there. - Make a copy of the status word, for some reason? - */ - memset (fstate, 0, sizeof (struct fpstate)); - - fstate->status = fsp->exc_status; - - memcpy (fstate->state, (char *) &fsp->hw_state, FP_STATE_BYTES); - - return TRUE; -} - -private boolean_t -get_i387_core_state (struct fpstate *fstate) -{ - /* Not implemented yet. Core files do not contain float state. */ - return FALSE; -} - -/* - * This is called by "info float" command - */ -void -i386_mach3_float_info (void) -{ - char buf[sizeof (struct fpstate) + 2 * sizeof (int)]; - boolean_t valid = FALSE; - fpstate_t fps; - - if (target_has_execution) - valid = get_i387_state (buf); -#if 0 - else if (WE HAVE CORE FILE) /* @@@@ Core files not supported */ - valid = get_i387_core_state (buf); -#endif - - if (!valid) - { - warning ("no floating point status saved"); - return; - } - - fps = (fpstate_t) buf; - - print_387_status (fps->status, (struct env387 *) fps->state); -} +// OBSOLETE /* Low level interface to I386 running mach 3.0. +// OBSOLETE Copyright 1992, 1993, 1994, 1996, 2000, 2001 +// OBSOLETE Free Software Foundation, Inc. +// OBSOLETE +// OBSOLETE This file is part of GDB. +// OBSOLETE +// OBSOLETE This program is free software; you can redistribute it and/or modify +// OBSOLETE it under the terms of the GNU General Public License as published by +// OBSOLETE the Free Software Foundation; either version 2 of the License, or +// OBSOLETE (at your option) any later version. +// OBSOLETE +// OBSOLETE This program is distributed in the hope that it will be useful, +// OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of +// OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// OBSOLETE GNU General Public License for more details. +// OBSOLETE +// OBSOLETE You should have received a copy of the GNU General Public License +// OBSOLETE along with this program; if not, write to the Free Software +// OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, +// OBSOLETE Boston, MA 02111-1307, USA. */ +// OBSOLETE +// OBSOLETE #include "defs.h" +// OBSOLETE #include "inferior.h" +// OBSOLETE #include "floatformat.h" +// OBSOLETE #include "regcache.h" +// OBSOLETE +// OBSOLETE #include <stdio.h> +// OBSOLETE +// OBSOLETE #include <mach.h> +// OBSOLETE #include <mach/message.h> +// OBSOLETE #include <mach/exception.h> +// OBSOLETE #include <mach_error.h> +// OBSOLETE +// OBSOLETE /* Hmmm... Should this not be here? +// OBSOLETE * Now for i386_float_info() target_has_execution +// OBSOLETE */ +// OBSOLETE #include <target.h> +// OBSOLETE +// OBSOLETE /* This mess is duplicated in bfd/i386mach3.h +// OBSOLETE +// OBSOLETE * This is an ugly way to hack around the incorrect +// OBSOLETE * definition of UPAGES in i386/machparam.h. +// OBSOLETE * +// OBSOLETE * The definition should specify the size reserved +// OBSOLETE * for "struct user" in core files in PAGES, +// OBSOLETE * but instead it gives it in 512-byte core-clicks +// OBSOLETE * for i386 and i860. +// OBSOLETE */ +// OBSOLETE #include <sys/param.h> +// OBSOLETE #if UPAGES == 16 +// OBSOLETE #define UAREA_SIZE ctob(UPAGES) +// OBSOLETE #elif UPAGES == 2 +// OBSOLETE #define UAREA_SIZE (NBPG*UPAGES) +// OBSOLETE #else +// OBSOLETE FIXME ! !UPAGES is neither 2 nor 16 +// OBSOLETE #endif +// OBSOLETE +// OBSOLETE /* @@@ Should move print_387_status() to i387-tdep.c */ +// OBSOLETE extern void print_387_control_word (); /* i387-tdep.h */ +// OBSOLETE extern void print_387_status_word (); +// OBSOLETE +// OBSOLETE #define private static +// OBSOLETE +// OBSOLETE +// OBSOLETE /* Find offsets to thread states at compile time. +// OBSOLETE * If your compiler does not grok this, calculate offsets +// OBSOLETE * offsets yourself and use them (or get a compatible compiler :-) +// OBSOLETE */ +// OBSOLETE +// OBSOLETE #define REG_OFFSET(reg) (int)(&((struct i386_thread_state *)0)->reg) +// OBSOLETE +// OBSOLETE /* at reg_offset[i] is the offset to the i386_thread_state +// OBSOLETE * location where the gdb registers[i] is stored. +// OBSOLETE */ +// OBSOLETE +// OBSOLETE static int reg_offset[] = +// OBSOLETE { +// OBSOLETE REG_OFFSET (eax), REG_OFFSET (ecx), REG_OFFSET (edx), REG_OFFSET (ebx), +// OBSOLETE REG_OFFSET (uesp), REG_OFFSET (ebp), REG_OFFSET (esi), REG_OFFSET (edi), +// OBSOLETE REG_OFFSET (eip), REG_OFFSET (efl), REG_OFFSET (cs), REG_OFFSET (ss), +// OBSOLETE REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs) +// OBSOLETE }; +// OBSOLETE +// OBSOLETE #define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum]) +// OBSOLETE +// OBSOLETE /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM +// OBSOLETE * Caller knows that the regs handled in one transaction are of same size. +// OBSOLETE */ +// OBSOLETE #define FETCH_REGS(state, regnum, count) \ +// OBSOLETE memcpy (®isters[REGISTER_BYTE (regnum)], \ +// OBSOLETE REG_ADDRESS (state, regnum), \ +// OBSOLETE count*REGISTER_SIZE) +// OBSOLETE +// OBSOLETE /* Store COUNT contiguous registers to thread STATE starting from REGNUM */ +// OBSOLETE #define STORE_REGS(state, regnum, count) \ +// OBSOLETE memcpy (REG_ADDRESS (state, regnum), \ +// OBSOLETE ®isters[REGISTER_BYTE (regnum)], \ +// OBSOLETE count*REGISTER_SIZE) +// OBSOLETE +// OBSOLETE /* +// OBSOLETE * Fetch inferiors registers for gdb. +// OBSOLETE * REGNO specifies which (as gdb views it) register, -1 for all. +// OBSOLETE */ +// OBSOLETE +// OBSOLETE void +// OBSOLETE fetch_inferior_registers (int regno) +// OBSOLETE { +// OBSOLETE kern_return_t ret; +// OBSOLETE thread_state_data_t state; +// OBSOLETE unsigned int stateCnt = i386_THREAD_STATE_COUNT; +// OBSOLETE int index; +// OBSOLETE +// OBSOLETE if (!MACH_PORT_VALID (current_thread)) +// OBSOLETE error ("fetch inferior registers: Invalid thread"); +// OBSOLETE +// OBSOLETE if (must_suspend_thread) +// OBSOLETE setup_thread (current_thread, 1); +// OBSOLETE +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE i386_THREAD_STATE, +// OBSOLETE state, +// OBSOLETE &stateCnt); +// OBSOLETE +// OBSOLETE if (ret != KERN_SUCCESS) +// OBSOLETE warning ("fetch_inferior_registers: %s ", +// OBSOLETE mach_error_string (ret)); +// OBSOLETE #if 0 +// OBSOLETE /* It may be more effective to store validate all of them, +// OBSOLETE * since we fetched them all anyway +// OBSOLETE */ +// OBSOLETE else if (regno != -1) +// OBSOLETE supply_register (regno, (char *) state + reg_offset[regno]); +// OBSOLETE #endif +// OBSOLETE else +// OBSOLETE { +// OBSOLETE for (index = 0; index < NUM_REGS; index++) +// OBSOLETE supply_register (index, (char *) state + reg_offset[index]); +// OBSOLETE } +// OBSOLETE +// OBSOLETE if (must_suspend_thread) +// OBSOLETE setup_thread (current_thread, 0); +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* Store our register values back into the inferior. +// OBSOLETE * If REGNO is -1, do this for all registers. +// OBSOLETE * Otherwise, REGNO specifies which register +// OBSOLETE * +// OBSOLETE * On mach3 all registers are always saved in one call. +// OBSOLETE */ +// OBSOLETE void +// OBSOLETE store_inferior_registers (int regno) +// OBSOLETE { +// OBSOLETE kern_return_t ret; +// OBSOLETE thread_state_data_t state; +// OBSOLETE unsigned int stateCnt = i386_THREAD_STATE_COUNT; +// OBSOLETE register int index; +// OBSOLETE +// OBSOLETE if (!MACH_PORT_VALID (current_thread)) +// OBSOLETE error ("store inferior registers: Invalid thread"); +// OBSOLETE +// OBSOLETE if (must_suspend_thread) +// OBSOLETE setup_thread (current_thread, 1); +// OBSOLETE +// OBSOLETE /* Fetch the state of the current thread */ +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE i386_THREAD_STATE, +// OBSOLETE state, +// OBSOLETE &stateCnt); +// OBSOLETE +// OBSOLETE if (ret != KERN_SUCCESS) +// OBSOLETE { +// OBSOLETE warning ("store_inferior_registers (get): %s", +// OBSOLETE mach_error_string (ret)); +// OBSOLETE if (must_suspend_thread) +// OBSOLETE setup_thread (current_thread, 0); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* move gdb's registers to thread's state +// OBSOLETE +// OBSOLETE * Since we save all registers anyway, save the ones +// OBSOLETE * that gdb thinks are valid (e.g. ignore the regno +// OBSOLETE * parameter) +// OBSOLETE */ +// OBSOLETE #if 0 +// OBSOLETE if (regno != -1) +// OBSOLETE STORE_REGS (state, regno, 1); +// OBSOLETE else +// OBSOLETE #endif +// OBSOLETE { +// OBSOLETE for (index = 0; index < NUM_REGS; index++) +// OBSOLETE STORE_REGS (state, index, 1); +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* Write gdb's current view of register to the thread +// OBSOLETE */ +// OBSOLETE ret = thread_set_state (current_thread, +// OBSOLETE i386_THREAD_STATE, +// OBSOLETE state, +// OBSOLETE i386_THREAD_STATE_COUNT); +// OBSOLETE +// OBSOLETE if (ret != KERN_SUCCESS) +// OBSOLETE warning ("store_inferior_registers (set): %s", +// OBSOLETE mach_error_string (ret)); +// OBSOLETE +// OBSOLETE if (must_suspend_thread) +// OBSOLETE setup_thread (current_thread, 0); +// OBSOLETE } +// OBSOLETE +// OBSOLETE +// OBSOLETE +// OBSOLETE /* Return the address in the core dump or inferior of register REGNO. +// OBSOLETE * BLOCKEND should be the address of the end of the UPAGES area read +// OBSOLETE * in memory, but it's not? +// OBSOLETE * +// OBSOLETE * Currently our UX server dumps the whole thread state to the +// OBSOLETE * core file. If your UX does something else, adapt the routine +// OBSOLETE * below to return the offset to the given register. +// OBSOLETE * +// OBSOLETE * Called by core-aout.c(fetch_core_registers) +// OBSOLETE */ +// OBSOLETE +// OBSOLETE CORE_ADDR +// OBSOLETE register_addr (int regno, CORE_ADDR blockend) +// OBSOLETE { +// OBSOLETE CORE_ADDR addr; +// OBSOLETE +// OBSOLETE if (regno < 0 || regno >= NUM_REGS) +// OBSOLETE error ("Invalid register number %d.", regno); +// OBSOLETE +// OBSOLETE /* UAREA_SIZE == 8 kB in i386 */ +// OBSOLETE addr = (unsigned int) REG_ADDRESS (UAREA_SIZE - sizeof (struct i386_thread_state), regno); +// OBSOLETE +// OBSOLETE return addr; +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* jtv@hut.fi: I copied and modified this 387 code from +// OBSOLETE * gdb/i386-xdep.c. Modifications for Mach 3.0. +// OBSOLETE * +// OBSOLETE * i387 status dumper. See also i387-tdep.c +// OBSOLETE */ +// OBSOLETE struct env387 +// OBSOLETE { +// OBSOLETE unsigned short control; +// OBSOLETE unsigned short r0; +// OBSOLETE unsigned short status; +// OBSOLETE unsigned short r1; +// OBSOLETE unsigned short tag; +// OBSOLETE unsigned short r2; +// OBSOLETE unsigned long eip; +// OBSOLETE unsigned short code_seg; +// OBSOLETE unsigned short opcode; +// OBSOLETE unsigned long operand; +// OBSOLETE unsigned short operand_seg; +// OBSOLETE unsigned short r3; +// OBSOLETE unsigned char regs[8][10]; +// OBSOLETE }; +// OBSOLETE /* This routine is machine independent? +// OBSOLETE * Should move it to i387-tdep.c but you need to export struct env387 +// OBSOLETE */ +// OBSOLETE private +// OBSOLETE print_387_status (unsigned short status, struct env387 *ep) +// OBSOLETE { +// OBSOLETE int i; +// OBSOLETE int bothstatus; +// OBSOLETE int top; +// OBSOLETE int fpreg; +// OBSOLETE unsigned char *p; +// OBSOLETE +// OBSOLETE bothstatus = ((status != 0) && (ep->status != 0)); +// OBSOLETE if (status != 0) +// OBSOLETE { +// OBSOLETE if (bothstatus) +// OBSOLETE printf_unfiltered ("u: "); +// OBSOLETE print_387_status_word (status); +// OBSOLETE } +// OBSOLETE +// OBSOLETE if (ep->status != 0) +// OBSOLETE { +// OBSOLETE if (bothstatus) +// OBSOLETE printf_unfiltered ("e: "); +// OBSOLETE print_387_status_word (ep->status); +// OBSOLETE } +// OBSOLETE +// OBSOLETE print_387_control_word (ep->control); +// OBSOLETE printf_unfiltered ("last exception: "); +// OBSOLETE printf_unfiltered ("opcode %s; ", local_hex_string (ep->opcode)); +// OBSOLETE printf_unfiltered ("pc %s:", local_hex_string (ep->code_seg)); +// OBSOLETE printf_unfiltered ("%s; ", local_hex_string (ep->eip)); +// OBSOLETE printf_unfiltered ("operand %s", local_hex_string (ep->operand_seg)); +// OBSOLETE printf_unfiltered (":%s\n", local_hex_string (ep->operand)); +// OBSOLETE +// OBSOLETE top = (ep->status >> 11) & 7; +// OBSOLETE +// OBSOLETE printf_unfiltered ("regno tag msb lsb value\n"); +// OBSOLETE for (fpreg = 7; fpreg >= 0; fpreg--) +// OBSOLETE { +// OBSOLETE double val; +// OBSOLETE +// OBSOLETE printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); +// OBSOLETE +// OBSOLETE switch ((ep->tag >> (fpreg * 2)) & 3) +// OBSOLETE { +// OBSOLETE case 0: +// OBSOLETE printf_unfiltered ("valid "); +// OBSOLETE break; +// OBSOLETE case 1: +// OBSOLETE printf_unfiltered ("zero "); +// OBSOLETE break; +// OBSOLETE case 2: +// OBSOLETE printf_unfiltered ("trap "); +// OBSOLETE break; +// OBSOLETE case 3: +// OBSOLETE printf_unfiltered ("empty "); +// OBSOLETE break; +// OBSOLETE } +// OBSOLETE for (i = 9; i >= 0; i--) +// OBSOLETE printf_unfiltered ("%02x", ep->regs[fpreg][i]); +// OBSOLETE +// OBSOLETE floatformat_to_double (&floatformat_i387_ext, (char *) ep->regs[fpreg], +// OBSOLETE &val); +// OBSOLETE printf_unfiltered (" %g\n", val); +// OBSOLETE } +// OBSOLETE if (ep->r0) +// OBSOLETE printf_unfiltered ("warning: reserved0 is %s\n", local_hex_string (ep->r0)); +// OBSOLETE if (ep->r1) +// OBSOLETE printf_unfiltered ("warning: reserved1 is %s\n", local_hex_string (ep->r1)); +// OBSOLETE if (ep->r2) +// OBSOLETE printf_unfiltered ("warning: reserved2 is %s\n", local_hex_string (ep->r2)); +// OBSOLETE if (ep->r3) +// OBSOLETE printf_unfiltered ("warning: reserved3 is %s\n", local_hex_string (ep->r3)); +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* +// OBSOLETE * values that go into fp_kind (from <i386/fpreg.h>) +// OBSOLETE */ +// OBSOLETE #define FP_NO 0 /* no fp chip, no emulator (no fp support) */ +// OBSOLETE #define FP_SW 1 /* no fp chip, using software emulator */ +// OBSOLETE #define FP_HW 2 /* chip present bit */ +// OBSOLETE #define FP_287 2 /* 80287 chip present */ +// OBSOLETE #define FP_387 3 /* 80387 chip present */ +// OBSOLETE +// OBSOLETE typedef struct fpstate +// OBSOLETE { +// OBSOLETE #if 1 +// OBSOLETE unsigned char state[FP_STATE_BYTES]; /* "hardware" state */ +// OBSOLETE #else +// OBSOLETE struct env387 state; /* Actually this */ +// OBSOLETE #endif +// OBSOLETE int status; /* Duplicate status */ +// OBSOLETE } +// OBSOLETE *fpstate_t; +// OBSOLETE +// OBSOLETE /* Mach 3 specific routines. +// OBSOLETE */ +// OBSOLETE private boolean_t +// OBSOLETE get_i387_state (struct fpstate *fstate) +// OBSOLETE { +// OBSOLETE kern_return_t ret; +// OBSOLETE thread_state_data_t state; +// OBSOLETE unsigned int fsCnt = i386_FLOAT_STATE_COUNT; +// OBSOLETE struct i386_float_state *fsp; +// OBSOLETE +// OBSOLETE ret = thread_get_state (current_thread, +// OBSOLETE i386_FLOAT_STATE, +// OBSOLETE state, +// OBSOLETE &fsCnt); +// OBSOLETE +// OBSOLETE if (ret != KERN_SUCCESS) +// OBSOLETE { +// OBSOLETE warning ("Can not get live floating point state: %s", +// OBSOLETE mach_error_string (ret)); +// OBSOLETE return FALSE; +// OBSOLETE } +// OBSOLETE +// OBSOLETE fsp = (struct i386_float_state *) state; +// OBSOLETE /* The 387 chip (also 486 counts) or a software emulator? */ +// OBSOLETE if (!fsp->initialized || (fsp->fpkind != FP_387 && fsp->fpkind != FP_SW)) +// OBSOLETE return FALSE; +// OBSOLETE +// OBSOLETE /* Clear the target then copy thread's float state there. +// OBSOLETE Make a copy of the status word, for some reason? +// OBSOLETE */ +// OBSOLETE memset (fstate, 0, sizeof (struct fpstate)); +// OBSOLETE +// OBSOLETE fstate->status = fsp->exc_status; +// OBSOLETE +// OBSOLETE memcpy (fstate->state, (char *) &fsp->hw_state, FP_STATE_BYTES); +// OBSOLETE +// OBSOLETE return TRUE; +// OBSOLETE } +// OBSOLETE +// OBSOLETE private boolean_t +// OBSOLETE get_i387_core_state (struct fpstate *fstate) +// OBSOLETE { +// OBSOLETE /* Not implemented yet. Core files do not contain float state. */ +// OBSOLETE return FALSE; +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* +// OBSOLETE * This is called by "info float" command +// OBSOLETE */ +// OBSOLETE void +// OBSOLETE i386_mach3_float_info (void) +// OBSOLETE { +// OBSOLETE char buf[sizeof (struct fpstate) + 2 * sizeof (int)]; +// OBSOLETE boolean_t valid = FALSE; +// OBSOLETE fpstate_t fps; +// OBSOLETE +// OBSOLETE if (target_has_execution) +// OBSOLETE valid = get_i387_state (buf); +// OBSOLETE #if 0 +// OBSOLETE else if (WE HAVE CORE FILE) /* @@@@ Core files not supported */ +// OBSOLETE valid = get_i387_core_state (buf); +// OBSOLETE #endif +// OBSOLETE +// OBSOLETE if (!valid) +// OBSOLETE { +// OBSOLETE warning ("no floating point status saved"); +// OBSOLETE return; +// OBSOLETE } +// OBSOLETE +// OBSOLETE fps = (fpstate_t) buf; +// OBSOLETE +// OBSOLETE print_387_status (fps->status, (struct env387 *) fps->state); +// OBSOLETE } |